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Fertilizer coating composite, its making method and multicomponent coated granular fertilizer

A technology of fertilizer coating and composition, applied in fertilizer mixture, fertilization device, application and other directions

Inactive Publication Date: 2004-10-13
陈大顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In order to overcome the above-mentioned defects that seriously affect the widespread use of existing coating fertilizers, the applicant of the present invention has found that the coating made of modified natural and / or synthetic colloids has a very good effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] The fertilizer coating composition is first manufactured. Its preparation steps are as follows:

[0102] (1) a mixture of 5 parts by weight of gelatin and 55 parts by weight of water, dissolved at a temperature of 70-75 ° C for 1.5 hours, to obtain a glue solution, and then add 0.5 parts by weight of sodium octadecylbenzene sulfonate to this glue solution , 3.0 parts by weight of silicon dioxide and 12 parts by weight of talc, and continued vigorous stirring for 40 minutes to obtain a homogeneous mixture.

[0103] (2) 5 parts by weight of thiourea, 4.0 parts by weight of borax, 4.0 parts of zinc sulfate, 5.0 parts of ferrous sulfate and 2.0 parts by weight of manganese sulfate are mixed, then add water to make a saturated solution, then add 2.0 parts by weight of citric acid and mix, A homogeneous mixture was obtained.

[0104] (3) adding the mixture obtained in step (1) to the mixture obtained in step (2), stirring and mixing for 30 minutes, adjusting the pH of the m...

Embodiment 2

[0114] The fertilizer coating composition is first manufactured. Its preparation steps are as follows:

[0115] (1) dissolve 5 parts by weight of polyvinyl alcohol in 56 parts by weight of water at a temperature of 95° C. to obtain a glue solution, add 0.5 parts by weight of sodium hexametaphosphate (10% by weight) to this glue solution, and stir vigorously A homogeneous mixture can be obtained.

[0116] (2) 5 parts by weight of water glass (modulus 3) was adjusted to pH 10.0-11.0 with dilute phosphoric acid, and vigorously stirred to obtain a homogeneous mixture.

[0117] (3) adding the mixture obtained in step (1) to the mixture obtained in step (2), stirring and mixing for 30 minutes, then adding 12 parts by weight of light calcium carbonate and 10 parts of talcum powder, and stirring at high speed to obtain a uniform mixture.

[0118] (4) Mix the filtrate obtained in step (3) with 7 parts by weight of calcium chloride (10% by weight) solution to obtain the fertilizer co...

Embodiment 3

[0126] The fertilizer coating composition is first manufactured. Its preparation steps are as follows:

[0127] (1) 35 parts by weight of hardened oil and fat were dissolved in 60 parts by weight of water at a temperature of 85° C. to obtain a mixture solution.

[0128] (2) Add 0.5 parts by weight of Tween 80 emulsifier to the mixture solution in step (1), stir at high speed to emulsify, then add 10 parts by weight of dicyandiamide, and stir for 40 minutes to obtain a uniform mixture.

[0129] (3) adding the mixture obtained in step (1) to the mixture obtained in step (2), stirring and mixing for 30 minutes, then adding 10 parts by weight of kaolin and 10 parts by weight of talc, and stirring at a high speed to obtain a uniform mixture, The filtrate was obtained by filtration.

[0130] (4) Mix the filtrate obtained in step (3) with 10 parts by weight of calcium chloride (10% by weight) solution to obtain the fertilizer coating composition.

[0131] The multi-coated compound...

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Abstract

The present invention relates to a coating composite for making coated granular fertilizer and its production method, and the fertilizer made up by using said coating composite. The coating composite is formed from coating agent, solidfying agent, nitrogen synergist, inorganic acid or organic acid, surfactant and adjuvant. As compared with non-coated fertilizer the nitrogen utilization rate of fertilizer produced by adopting said invention can be raised by 6%-10%, the fertilizer can be saved by 15-45%, and its fertilizer efficiency time can be obviously prolonged, and can be reached to 60-120 days.

Description

[Technical field] [0001] The present invention relates to a coated fertilizer and a manufacturing method thereof. More particularly, the present invention relates to coating compositions used in coated fertilizers and methods of making them, and fertilizers made using such compositions. [Background technique] [0002] As we all know, elemental nitrogen fertilizers or nitrogen-containing compound fertilizers are the most widely used solid granular fertilizers, all of which are water-soluble quick-acting fertilizers. Once these water-soluble quick-acting fertilizers are applied to the soil, part of the fertilizers can be absorbed and utilized by crops, but most of the fertilizers may cause serious losses due to leaching, volatilization or mineralization, resulting in very low utilization rates of fertilizers. It not only causes huge waste of resources, but also causes serious pollution of water area and atmospheric environment, which has attracted great attention from all ove...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/90
Inventor 陈大顺
Owner 陈大顺
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